Year | Value | 2021 | 1,186 | 2020 | 4,233 | 2019 | 14,091 | 2018 | 11,310 | 2017 | 10,743 | 2016 | 11,058 | 2015 | 11,624 | 2014 | 10,392 | 2013 | 10,920 | 2012 | 10,374 | 2011 | 11,672 | 2010 | 12,333 | 2009 | 12,274 | 2008 | 13,071 | 2007 | 12,128 | 2006 | 12,381 | 2005 | 11,808 | 2004 | 13,322 | 2003 | 11,812 | 2002 | 11,953 | 2001 | 12,237 | 2000 | 12,739 | 1999 | 16,200.000976562 | 1998 | 13,600 | 1997 | 13,600 | 1996 | 12,200 | 1995 | 11,800 | 1994 | 9,600 | 1993 | 6,700 | 1992 | 5,100 | 1991 | 4,400 | 1990 | 4,400 | 1989 | 3,600 | 1988 | 3,500 | 1987 | 3,400 | 1986 | 3,600 | 1985 | 3,700 | 1984 | 3,500 |
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